Class 11- Biology- chapter 16- Excretory Products and their Elimination InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Which of the following statement is false Nephrons begin with Bowmen's capsule having glomerulus Nephrons perform excretion through filtration, reabsorption and secretion. Tapeworm have excretory flame cells Nephridia are accessory excretory organs in Prawn None 2. Which one of the following statements is correct with respect to salt water balance inside the body of living organisms? Salmon fish excretes lot of stored saIt through gill membrane in fresh water. When water is not available camels do not produce urine but store urea in tissues. The body fluids of fresh water animals are generally hypotonic to surrounding water. Paramecium discharges concentrated salt solution by contractile vacuoles. None 3. The nephrons discharge their urine at the Renal pyramid Urethra Urinary bladder Renal pelvis None 4. The function of counter current mechanism is performed byI. GillsII. KidneysIII. IntestinesIV. Lungs I and III only I, II, III, and IV II and IV only I, II, and IV None 5. Which of the following statements is incorrect? Glomerulus along with Bowman's capsule is called the renal corpuscle. Renal corpuscle, proximal convoluted tubule (PCT) and distal convoluted tubule(DCT) of the nephron are situated in the cortical region of kidney. Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis. The medullary zone of kidney is divided into a few conical masses called medullary pyramid projecting into the calyces. None 6. Which disease is caused due to high accumulation of uric acid in the bloodstream? Hypouremia Uremia Hyperuremia Hyperuricemia None 7. Complete the following paragraph by selecting the option that correctly fills the blanks (i) - (iv).The kidneys have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by (i). It is a special sensitive region formed by cellular modifications in the (ii) and the (iii) at the location of their contact. A fall in GFR can activate the JG cells to release (iv) which can stimulate to glomerular blood flow and thereby brings GFR back to normal. JGA DCT Afferent arteriole Renin ANF DCT Afferent arteriole Renin ANF PCT Efferent arteriole Angiotensin JGA PCT Efferent arteriole Angiotensinogen None 8. Mark the inappropriate term w.r.t. the glomerular filtration. Passive process Occurs due to pressure difference Active process Non selective None 9. lonosnic pathway occurs in Uricotelism Ammonotelism Ureotelism Guanotelism None 10. Column of Bertin is extension of Medulla into cortex Renal-capsule into cortex Renal pelvis into renal, sinus Cortex into medulla None 11. The filtrate from the glomerulus contains Urea, uric acid, ammonia and water Urea, uric acid and ammonia Urea and uric acid Urea, uric acid, glucose and water None 12. Connecting tubule acts as part of which organ Pancreas Kidney Liver Heart None 13. The excretory material of bony fish is Urea Amino acid Protein Ammonia None 14. Which one of the following statements in regard to the excretion by the human kidneys is correct ? Distal convoluted tubule is incapable reabsorbing 𝐻 𝐶 𝑂 3 Nearly 99% of glomerular filtrate is reabsorbed by renal tubules Ascending limb of loop of Henle in impermeable to electrolytes Descending limb of loop of Henle, impermeable to water None 15. Study the following. (i) Uricase enzyme is not found in apes and man.(ii) Purine metabolism leads to the formation of uric acid.(iii) In ureotelic organisms, carbondioxideCO2 and ammonia converted into urea through the Cori cycle.(iv) More energy consumed is for the production of uric acid.(v) TMO (Trimethylamine oxide) protects the proteins from the effect of urea in Chondrichthyes fishes. Which of the given statements are correct? All, except V All, except II All, except III All, except IV None 16. If kidneys fail to reabsorb water, the effect on tissue would Remain unaffected Take more O2 from the blood Shrink and shrivel Absorb water from blood plasma None 17. Which is not part of renal pyramid Collecting ducts Peritubular capillaries Loop of Henle Convoluted tubules None 18. Ducts of Bellini open in Renal sinus Minor calyx Major calyx Renal pyramid None 19. How many molecules of ammonia are required to form 8 molecules of urea? 16 4 34 8 None 20. The urine under normal conditions does not contain glucose because Glucose in glomerular filtrate is converted into glycogen. Glucose in glomerular filtrate is reabsorbed in the uriniferous tubules. Glucose of blood is not filtered in the glomerulus. The normal blood sugar is fructose. None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
